Hoist



Feb. 11', 1930. r G. D. MALLORY 1,146,707

HOIST Filed April 19, 1928 gwumytoz emu 11mm atliouwq Patented Feb. 11,1930

UNITED ATES GERALD D. MALLORY, OF AKRON, OHIO, ASSIGNOB TO THE GOODYEAR COMPANY, OF AKRON, OHIO, A CORPORATION OF OHIO PATENT OFFICE V TIRE 8c RUBBER HOIST Application filed April 19, 1928 Serial No. 271,238.

1 The object of the invention is to provide an improved mechanism for handling a roll of fabric supported upon a shaft.

In certain manufacturin oaerations wherein rolls of fabric material. are consumed, frequent replacement of the rolls involves considerable manipulation thereof. The fabric, initially, is wound upon cylindrical shells into large rolls, from which it subsequently is'unwound and fed'to strip cutting or other mechanism. Each shell has a shaft projecting therethrough, and when it becomes necessary to move the roll, hooks are employed which are engageable with the ends of the shaft. Usually the hooks are connected by chains to an overhead hoist.

Heretofore, mechanisms of the type re ferred to were not entirely satisfactory, be cause of the difficulty of maintaining the hooks in engaged relation with the shaft. Frequently one or both hooks Would slip from the ends of the shaft, and the roll would fall either into the framework from which it had been removed, or else to the floor. In. the former case, it was difficult to extricate the roll from the framework, because of the abnormal position into which the roll usually became lodged. In the lattercase, the operators were subjected to grave danger by the falling of the roll, and frequently an injury resulted.

This invention obviates the difficulties heretofore encountered. Modified forms of a hook and a shaft are provided and are of such construction that there is little chance of accidental disengagement of the hooks from the shaft;

For a better understanding of the invention, reference may now be had to the accompanying drawings, forming a part of this specification, in which- Figure 1 is a fragmentary plan view of a supporting frame with a roll of fabric thereon; Figure 2 is a p r pective View, on a l ger scale,

scale, of one end of the shaft employed to sup port the roll of fabric;

Figure 3 is a perspective View, showing in detail a portion of a stub shaft for supporting the roll of fabric;

Figure 4 is a perspective View, on a larger of the collar employed to secure the end of the roller shaft to the stub shaft;

Figure 5 is an elevational view, on a larger scale, of one of the hooks employed for moving the shaft to and from the supporting frame; and

Figures 6 and 7 are elevational views, on a larger scale, of other forms of hooks which may be employed.

Referring to Figure 1, a supporting frame 10 is shown having a plurality of journals .11,

in which a plurality of stub shafts 12 are rotatably supported. Each of the shafts 12 has a. rectangular slot 13in its inner end, which isadapted to receive a squared end 14 of a shaft 15 supporting a roll of fabric 16. The squared end of the shaft is maintained in the slot 13 by means of a collar 17 that encircles the end of the shaft 12 and a projection 18 on its inner periphery engages the shaft withinthe slot 13. In assembled relation, the squared end 14 of the shaft 15 occupies the central portion of the slot 13, and the projection 18 lies radially outwardly thereof.

On each of the squared ends of the shaft 15, there is provided a reduced cylindrical portion 20 having integral shoulders 21 and 22 at each end thereof, the purpose of which will be hereinafter referred to.

Removal of the shaft 15 from the frame .10 is accomplished by means of hooks 2 1, adapted to coact with the reduced portion 20 on the ends of the shaft. Each hook is of substantially C shape, and has a gap 25in its side wall 26 sufficiently large to receive the reduced cylindrical portion 20 of the shaft 15, but not large enough tomove beyond the shoulders 21 and 22. Thus, when the hook engages the cylindrical portion ofthe shaft, it cannot move longitudinally relative thereto. "Opposite the gap 25, the inner surface 27 of the side wall 26 is substantially parallel to botht j r exi A f the beet 5'3 by Figure 5.

and to the medial line 'oining the opposed portions of the hook defining the gap 25.

At its upper end, the hook is provided with an integral lug 28 having an opening 29 therein for receiving a link 30 of a chain connected to an overhead lifting mechanism or hoist. The central point of contact 31 of the link 30 with the lug 28, is located at the side of the major axis A of the hook opposite the gap 25, in order to offset the loss of weight caused by removing the metal to form the gap. The position of the lug 28 and the point 31 is such that if the hook is hanging freely the axial line A is substantially vertical. From this it follows that, if the hook loosely engages the circular portion 20 of the shaft 15, the position of the opening 25 is as illustrated by Figure 5, and there is no tendency for the hook to gravitate to such a position as to become disengaged from the shaft. That is, there is no tendency for the hook, when loosely engaging the portion 20, to free itself laterally from such portion. It is apparent, however, that the hook may be freed from the portion 20 by a simple manual operation.

Figure 6 relates to a construction in which the ends of the hook defining the gap 25 are inclined to the axis A. In addition, the point 31 is disposed nearer the axis than it is in its position shown by Figure 5. This results in the axis being inclined to the left when the hook is hanging freely. \Vhen the hook is engaged with the portion 20 of the shaft and is allowed to move downward relative thereto, it is prevented from disengaging the shaft by the inclination of the ends of the hook bordering the opening 25. Upon raising the hook, the surface 27 thereof is maintained against the portion 20 because of the inclination of the hook to the vertical. Hence, when the hook moves vertically relative to the shaft, its accidental disengagement therefrom is prevented.

Figure 7 relates to a construction similar to that shown by Figure 6, except that the inclination of the ends of the hook defining the opening 25 is in an opposite direction. Moreover, the point 31 is spaced further from the axis A than it is in its position shown This results in the axis being inclined to the right when the hook is hanging freely. When the hook is allowed to move downward relative to the shaft, the surface 27 rides against the portion 20 and, consequently, the opening 25 is maintained away from this portion of the shaft. Upon raising the hook, the inner periphery thereof opposite the surface 27 is engaged with the portion 20, but since the ends defining the opening 25 are inclined downwardly toward the axis, the hook does not become disengaged from the shaft. V

In operating the device, the hooks 24 are applied to theends of the shaft 15, and in engaging relation with the circular portions'2U.

During the operation of lifting the shaft 15 from its supports, the hooks cannot be accidentally released from the shafts, because the shoulders 21 and 22 prevent the hook from moving longitudinally thereof. On the other hand, the peculiar construction of the hook causes its position to be such that it cannot be released laterally accidentally from the shaft.

It will be apparent from the foregoing description that the lifting mechanism provided, practically obviates the dangers encountered heretofore in moving heavy rolls of fabric. The construction of the improved shaft is inexpensive, while the provision of the modified form of hook is no more expensive than the hooks heretofore provided.

Although I have illustrated only the preferred form which the invention may assume and have described that form in detail, it will be apparent to those skilled in the art that the invention is not so limited, but that various modifications may be made therein without departing from the spirit of the invention or from the scope of the appended claims.

lVhat I claim is:

1. A hoisting device comprising a hook of substantially C shape, an apertured lug secured to the upper portion of the hook, and means pivotally engaged with the apertured lug for suspending the hook, the pivot point lying on the side of the major axis of the hook, opposite the gap in the latter.

2. A hoisting device comprising a hook of substantially C shape, an apertured lug secured to the upper portion of the hook, and means pivotally engaged with the apertured lug for suspending the hook, the pivotal point lying on one side of the major axis thereof.

3. A hoisting device comprising a hook of substantially C shape, and means pivota-lly engaged with the hook for suspending it, the pivot point lying on one side of the major axis thereof.

4. A hoisting device comprising a hook of substantially C shape, and means pivotally engaged with the hook for suspending it, the pivot point lying on one side of the major axis thereof, the ends of the hook defining the gap therein being inclined relative to said axis.

In Witness whereof, I have hereunto signed my name. I

Signed at Akron, in the county of Summit and State of Ohio, U. S. A., this 18th day of April, 1928.

GERALD D. MALLORY. 

